KR102144245B1 - Highly durable packaging composition with heat exchange performance - Google Patents

Abstract

The present invention relates to a packaging material composition including a main material, a filler containing silica sand, a hardener, a pigment, and a heat exchange material. The packaging material composition according to the present invention has heat exchange performance to prevent the temperature of a surface on which the packaging material is applied from rising so that a heat island phenomenon in urban areas can be mitigated, and can form a packing layer that maintains excellent performance for a long time as the filler is not easily separated by external impact.

Description

Highly durable packaging composition with heat exchange performance

The present invention has heat exchange performance and can prevent the temperature of the road surface and buildings from rising, so that road deformation and urban heat island phenomenon can be alleviated, and the filling material is not easily separated by external shock, so that excellent performance is maintained for a long time. It relates to a highly durable packaging composition that can be used for non-slip packaging and exterior packaging of buildings.

Recently, climate environment problems such as ozone layer destruction, global warming, and tropical nights occur frequently due to indiscriminate development, and such climate environment problems have emerged as urgent problems to be solved worldwide.

In particular, as industrialization and urbanization progress rapidly, residential, commercial spaces, and public facilities are increasing significantly, while the area of green space decreases, resulting in artificial heat accumulating in urban areas, intensifying population density, and various atmospheres. Due to the increase in the amount of pollutants, the circulation of solar energy is not performed smoothly, and a heat island phenomenon in which the temperature in the city rises locally occurs frequently.

The urban heat island phenomenon is caused by a variety of factors, and the main cause is from the denseness of concrete buildings in metropolitan cities and the urban structure of asphalt-coated pavement. As the heat is transferred to the inside, the temperature of the road surface or the inside of the building rises, and the asphalt concrete road has the characteristics of daytime heat dissipation and rapid heat transfer to the near-infrared rays of sunlight and the heat of the atmosphere. Is rapidly rising, and it is known that an increase in the temperature of the road surface or inside the building due to such a heat island phenomenon is known to cause an increase in cooling costs, and various methods for solving this are being sought.

For example, conventionally, in order to prevent the road from getting hot, a method of blocking heat based on reflection and insulation is used by applying a pavement material with a heat shielding pigment and hollow spheres on the road surface.

The heat shielding material reflects light of a wavelength (750 to 2,500 nm) in the near-infrared region of sunlight, which is the main cause of the temperature increase, with a high reflectivity to prevent the surface temperature of the wall from rising. In addition, hollow spheres play a role in interfering with heat conduction from the coating film to the resin, and pavement materials incorporating such heat shielding materials and hollow spheres fundamentally block or mitigate the accumulation of heat on the road, thereby reducing unnecessary energy consumption. It is known as an eco-friendly, energy-saving coating technology that saves money.

However, when a certain period of time elapses, the surface of the packaging material with a heat shielding material is contaminated and the reflective effect is reduced, and a significant heat shielding effect can be obtained only if it is glossy, white or close to white color. There is a problem in that the choice is narrow and does not affect the reduction of radiant heat.

On the other hand, heat exchange paint is a paint made by integrating a new technology called energy exchange, and a special heat exchange material is introduced into the coating film to cause energy conversion as soon as heat reaches it, thereby lowering the temperature, and causing such an energy exchange action in the surface layer. Let the heat be consumed as kinetic energy. Heat exchange paint not only maintains a pleasant environment by inducing the effect of lowering the external surface temperature in summer, but also has the effect of lowering the ambient temperature by reducing the radiant heat of the surface, and also prevents heat insulation and condensation in winter. In addition to the reduction, interest is increasing as it can also induce the effect of reducing greenhouse gas (CO ₂ ).

However, in the past, research on packaging materials having anti-skid performance and packaging performance by introducing a filler can alleviate urban heat island phenomenon by introducing a heat exchange material, and thus research is required.

Korean Patent Registration No. 10-1946050 (Announcement date: 2019.02.08) Korean Patent Registration No. 10-1901294 (announcement date: 2018.09.28) Korean Patent Registration No. 10-1404456 (announcement date: 2014.06.10) Korean Patent Registration No. 10-1109537 (announcement date: 2012.02.09)

The present invention was conceived to solve the problems of the prior art as described above, exhibits heat exchange performance, exhibits sufficient adhesive properties even when an excessive amount of solid components such as heat exchange materials and fillers are contained, and the filler is not easily separated. It is intended to provide technical details on a highly durable packaging composition that can be used for applications such as building coatings and road pavements since it can stably form a pavement layer for a long time.

The technical problems to be solved by the present invention are not limited to the technical problems mentioned above, and other technical problems that are not mentioned are clearly understood by those of ordinary skill in the technical field to which the present invention belongs from the following description. Can be.

In order to achieve the technical problem as described above, the present invention comprises: 100 parts by weight of the subject; 50 to 150 parts by weight of a filler including silica sand; 0.5 to 5 parts by weight of a curing agent; 1 to 10 parts by weight of pigment; And 5 to 50 parts by weight of a heat exchange material; wherein the subject is 40 to 60 parts by weight of a methyl methacrylate resin (MMA), 15 to 25 parts by weight of a polyvinyl alcohol (PVA) resin, It provides a packaging composition comprising 5 to 15 parts by weight of ethylene vinyl acetate (EVA) resin and 15 to 25 parts by weight of monoethanolamine (MEA).

In addition, the packaging composition according to the present invention is one selected from the group consisting of curing accelerators, ultraviolet stabilizers, modifiers, silane coupling agents, antifoaming agents, leveling agents, wetting agents, flame retardants, matting agents, antioxidants, surfactants, and viscosity modifiers. It may further include the above additives.

In addition, the methyl methacrylate resin is a mixture of 10 to 30 parts by weight of a low viscosity methyl methacrylate resin having a viscosity of 10 to 2,000 cps and 70 to 90 parts by weight of a high viscosity methyl methacrylate resin having a viscosity of 3,000 to 15,000 cps Mixed methyl methacrylate resins can be used.

In addition, the filler includes a coated silica sand coated with copper sulfide, and the coated silica sand is subjected to acid treatment of the silica sand by immersing the silica sand in an acidic aqueous solution having a pH of 1 to 3 and reacting for 1 to 12 hours; And immersing the acid-treated silica sand in a coating solution containing copper sulfate, heating at a temperature of 50 to 90° C., and reacting for 1 to 6 hours to prepare coated silica sand.

The packaging material composition according to the present invention exhibits heat exchange performance by a heat exchange material and prevents an increase in the temperature of the surface on which the packaging material is applied to mitigate the heat island phenomenon in urban areas, thereby forming a non-slip layer on the road or on the exterior of a building. A packaging layer can be formed.

In addition, the packaging composition according to the present invention additionally introduces a PVA resin and an EVA resin to improve the physical properties of the MMA resin, and even when the content of the steel-making slag filler, which is a solid component, is high, the filler is not easily separated from the pavement layer. Therefore, it is possible to stably form a non-slip pavement layer on the road for a long time.

In addition, the packaging composition according to the present invention can form a packaging layer with better long-term durability by introducing a coating-treated filler to improve bonding strength with the subject, and the formed packaging layer effectively absorbs infrared rays to realize improved heat exchange performance. I can.

1 is a result of evaluating the filler separation prevention performance of a packaging layer formed using a packaging material composition prepared by a method according to Examples and Comparative Examples.
2 is a result of evaluating the heat shielding performance of a packaging layer formed using a packaging material composition prepared by a method according to Examples and Comparative Examples.

Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings so that those of ordinary skill in the art may easily implement the present invention. However, since the description of the present invention is merely an embodiment for structural or functional description, the scope of the present invention should not be construed as being limited by the embodiments described in the text. That is, since the embodiments can be changed in various ways and have various forms, the scope of the present invention should be understood to include equivalents capable of realizing the technical idea. In addition, since the object or effect presented in the present invention does not mean that a specific embodiment should include all or only such effects, the scope of the present invention should not be understood as being limited thereby.

The meaning of the terms described in the present invention should be understood as follows.

Terms such as "first" and "second" are used to distinguish one component from other components, and the scope of rights is not limited by these terms. For example, a first component may be referred to as a second component, and similarly, a second component may be referred to as a first component. When a component is referred to as being "connected" to another component, it should be understood that although it may be directly connected to the other component, another component may exist in the middle. On the other hand, when it is mentioned that a certain component is "directly connected" to another component, it should be understood that there is no other component in the middle. On the other hand, other expressions describing the relationship between components, that is, "between" and "just between" or "neighboring to" and "directly neighboring to" should be interpreted as well.

Singular expressions are to be understood as including plural expressions unless the context clearly indicates otherwise, and terms such as "comprises" or "have" refer to specified features, numbers, steps, actions, components, parts, or It is to be understood that it is intended to designate that a combination exists and does not preclude the presence or addition of one or more other features or numbers, steps, actions, components, parts, or combinations thereof.

All terms used herein have the same meaning as commonly understood by one of ordinary skill in the field to which the present invention belongs, unless defined otherwise. Terms defined in commonly used dictionaries should be interpreted as having meanings in the context of related technologies, and cannot be interpreted as having an ideal or excessive formal meaning unless explicitly defined in the present invention.

Hereinafter, the present invention will be described in detail.

The packaging composition according to the present invention includes a main material, a filler, a curing agent, a pigment, and a heat exchange material, and can be easily utilized for applications such as anti-slip pavement, building exterior pavement, concrete road pavement, and the like.

Looking at the constituent components of the packaging composition in detail, the subject acts as a binder to exhibit adhesion to the filler and the adherend after curing, and methylmethacrylate resin (MMA), polyvinyl alcohol resin, PVA), ethylene vinyl acetate resin (EVA), and a mixture containing monoethanolamine (MEA) can be used as a main material.

Looking at each of the components included in the subject in detail, MMA resin is a major constituent of the subject and is a type of thermoplastic plastic, capable of forming a coating film with excellent adhesion to the adherend surface, and sulfuric acid, hydrochloric acid, acidic acid, and caustic soda. As it has strong resistance to inorganic chemicals such as, caustic potassium, etc., it has excellent chemical resistance, excellent electrical insulation, low specific gravity, and low moisture absorption.

The MMA resin may be mixed in a proportion of 40 to 60 parts by weight in the main body, and if the content of the MMA resin is less than 40 parts by weight, a problem of lowering the chemical resistance of the coating film may occur, and if it exceeds 60 parts by weight, adhesion and A problem of deteriorating mechanical properties may occur.

In particular, the MMA resin can form a packaging layer with improved adhesion and mechanical properties by using an anti-slip packaging composition in which two types of MMA resins having different viscosities are introduced.

To this end, the MMA resin may be a mixed MMA resin in which a low viscosity MMA resin having a viscosity of 10 to 2,000 cps and a high viscosity MMA resin having a viscosity of 3,000 to 15,000 cps are mixed in a weight ratio of 1:10 to 1:1, respectively, When the content of the low-viscosity MMA resin is mixed below the above weight ratio, the pavement layer formed of the pavement composition may be easily separated due to low adhesion to the road surface, and when the weight ratio is exceeded, a thick pavement layer is formed. It is difficult to do so, and a problem of deteriorating the mechanical properties of the coating film forming the packaging layer may occur.

Therefore, as described above, the pavement composition in which MMA resins having different viscosities are introduced can further improve the bonding strength with the road road surface and the filler by the low viscosity MMA resin, and the low viscosity MMA resin is the pore formed on the surface of the filler and the road road surface. It is easily adsorbed on the uneven parts of the pavement so that the filler does not easily detach from the pavement layer, the coating film is strongly adhered to the road surface, and the mechanical properties and stability are improved by the high viscosity MMA resin, so that an excellent pavement layer can be formed on the road surface.

On the other hand, PVA resin has the property of being easily soluble in water, is not only non-toxic, but also has excellent compatibility with MMA resin and EVA resin. PVA resin enhances adhesion by imparting hydrophilicity to the surface to be adhered, that is, the road surface with positive ions, and enhances the mechanical properties of the pavement layer by increasing the dispersibility of the MMA resin. To increase the content of. For this reason, the PVA resin makes it possible to form a thick coating film by supplementing the disadvantages of the MMA resin, and it is possible to form a packaging layer with improved mechanical properties such as abrasion resistance. In particular, in order to form a coating film of the desired hardness by mixing the PVA resin with the MMA resin, the content of the PVA resin must be sufficiently increased, but when the content of the PVA resin is high, it is difficult to mix a high content of a solid filler. , As the solid content increases, the strength of the coating film after coating may decrease.

The PVA resin as described above may be mixed in a range of 15 to 25 parts by weight based on the total weight of the polymer resin mixture, and when the content of the PVA resin is less than 15 parts by weight, the hardness of the packaging layer is low and the mechanical properties of the coating film are lowered. Problems may occur, and if it exceeds 25 parts by weight, sufficient dispersion of the filler in the anti-slip packaging composition is difficult, and the adhesive strength of the packaging layer is deteriorated.

On the other hand, EVA resin reinforces the adhesiveness, impact resistance and flexibility of the packaging material composition, and serves to suppress the formation of cracks in the coating film.In particular, even when the content of the filler is high with the MEA resin, the filler is used in the packaging layer. It is possible to form a packaging material composition that does not easily escape from.

In the packaging material composition, the EVA resin may be mixed in a ratio of 5 to 15 parts by weight, and when the content of the EVA resin is less than 5 parts by weight, it is difficult to improve the physical properties of the packaging material composition, and when it exceeds 15 parts by weight, a soft coating film is formed and dried. Afterwards, stickiness remains on the coating film, so the hardness and strength must be supplemented.

On the other hand, MEA, as a high-performance dispersion resin, has a high acid value, and significantly improves the dispersibility of the filler, and plays a role of greatly increasing the content of the filler so that the content of steelmaking slag included in the packaging composition is 100 parts by weight or more. In particular, MEA improves the adsorption rate and degree of adsorption of low-viscosity MMA resin on the surface of steel slag particles to form a pavement layer, and then strongly bonds the steelmaking slag from the pavement layer so that it does not easily escape, and has excellent rheology. It has characteristics.

The MEA resin as described above may be mixed in the packaging composition in a ratio of 15 to 25 parts by weight, and when the content of the MEA resin is less than 15 parts by weight, sufficient dispersion of the filler is difficult and it is difficult to mix a high content of the filler, and 25 parts by weight If it is exceeded, a problem of lowering the strength of the coating film may occur.

The filler improves the numerical stability, abrasion resistance, crack prevention performance, impact resistance, etc. of the pavement layer formed using the packaging material composition, and can provide a non-slip pavement layer to form an anti-slip pavement layer. Include.

Silica sand is used as a raw material for glass, foundry sand, and other industrial raw materials. Due to weathering of rocks, other minerals are decomposed and disappeared, and only quartz remains or is transported. It is a sand component that provides anti-slip function and retroreflective effect to the packaging material. It is added to reinforce the mechanical properties of packaging materials such as wear resistance and impact resistance.

Silica sand is used by mixing silica sand No. 3 (standard) with an average particle size of 1.5 to 2.4 mm, silica sand No. 4 (standard) with an average particle size of 1.2 to 1.5 mm, and silica sand No. 7 (standard) with an average particle size of 0.1 to 0.35 mm. In addition, a silica sand mixture containing 30 to 40% by weight of silica sand No. 3, 30 to 50% by weight of silica sand No. 4, and 10 to 40 wt% of silica sand No. 7 may be used, whereby the average particle size is large. And it is possible to achieve the effect of preventing cracks occurring in the packaging material by increasing the ductility by placing the silica sand 7 having a small average particle size between the silica sand No. 4.

Particularly, silica sand has a high bonding power with the main material and does not easily separate from the pavement layer, but is processed to promote the conversion of thermal energy into kinetic energy by a heat exchange material by absorbing infrared rays, and coated with copper sulfide. You can use silica.

Specifically, the step of immersing the silica sand in an acidic aqueous solution having a pH of 1 to 3 including hydrochloric acid, sulfuric acid, nitric acid, organic acid, or a mixture thereof to acid-treat the silica sand; And immersing the acid-treated silica sand in a coating solution containing copper sulfate and reacting for 1 to 6 hours to prepare coated silica sand. When the silica sand is acid-treated as described above, the porous pores formed on the surface of the silica sand exhibit hydrophilicity due to hydroxyl groups, and copper ions having positive ions are effectively adsorbed to the hydrophilic silica sand, so that copper sulfate can be coated on the silica sand surface.

The coating solution containing copper sulfate is copper sulfate (CuSO ₄ ) and sulfide salts such as sodium sulfide, fluoride salts such as sodium fluoride, iron fluoride, potassium fluoride, and zinc fluoride, chloride salts such as sodium chloride, iron chloride, potassium chloride, and zinc chloride, or their A coating solution prepared by reacting a mixed salt at a molar ratio of 1:1 at a temperature of 50 to 90°C to prepare nanometer-sized copper sulfide, to obtain the prepared copper sulfide, and then mixing it with a solvent such as alcohol may be used. .

As described above, the copper sulfide-coated silica sand greatly improves the effect of collecting infrared rays by the copper sulfide, thereby improving heat storage performance, and thus, low heat exchange efficiency due to the lack of surface area of the heat exchange material in the packaging layer containing an excessive amount of filler. It can be improved, and copper sulfide can play a role of reinforcing the bonding strength with the subject so that the silica sand does not easily escape from the pavement layer.

In addition, the filler may be configured to additionally include silicate, and the silicate penetrates into voids such as cracks and irregularities formed on the road surface, and is hardened together with the main material to form a structure in which the pavement layer is strongly supported on the road surface.

The silicate may be lithium silicate, sodium silicate, potassium silicate, potassium silicate, lithium aluminosilicate, or a mixture thereof, and the silicate is a mixture of lithium silicate and sodium silicate in a weight ratio of 10:1 to 1:1, respectively. Silicate mixtures can also be used.

In addition, silicate may be mixed in a ratio of 1 to 10 parts by weight based on 100 parts by weight of the filler, and if the content of silicate is less than 1 part by weight, crystallization does not occur inside the pores of the concrete surface, and thus durability may not be improved. And, if it exceeds 10 parts by weight, there is a concern that the hardness increases and the elasticity and anti-slip effect decrease.

In addition, the filler may be configured to further include illite, talc, calcium carbonate, barium sulfate, magnesium hydroxide, silica-based filler, or a mixture thereof in addition to silica sand and silicate, and is not limited thereto.

When the above-described filler is used as a non-slip packaging material, it may be mixed in a ratio of 50 to 150 parts by weight, based on 100 parts by weight of the main body, and when the content of the filler is less than 50 parts by weight, the anti-slip performance decreases, When it exceeds 150 parts by weight, a problem of deteriorating long-term durability may occur due to a high separation rate of the filler. Preferably, the filler may be mixed in a proportion of 100 parts by weight.

In addition, the filler may be mixed in a ratio of 50 to 150 parts by weight, based on 100 parts by weight of the main body, when the packaging material composition is used for building packaging.

On the other hand, the curing agent serves to cure the main material and form a packaging layer by combining various components included in the composition.

The curing agent can be a peroxide curing agent, and the peroxide curing agent is benzoyl peroxide, tert-butyl peroxybenzoate, methyl ethyl ketone peroxide, cumene hydro Peroxide (cumene hydroperoxide), 2,5-dimethylhexyl-2,5-diperoxybenzoate (2,5-dimethylhexyl-2,5-diperoxybenzoate), acetone peroxide (acetone peroxide), pinane peroxide (pinane peroxide) ), diethyl ether peroxide, or a mixture thereof.

The content of the curing agent may be mixed in a ratio of 0.5 to 5 parts by weight relative to 100 parts by weight of the main material, and if the content of the curing agent is less than 0.5 parts by weight, the curing reaction may be degraded, resulting in a problem of deteriorating the mechanical properties of the packaging layer. If it exceeds parts by weight, the curing speed is high, causing phase separation, etc., and there is a fear that the adhesive strength and the like may decrease. Preferably, the curing agent may use benzoyl peroxide, and may be mixed in a ratio of 2 parts by weight to 100 parts by weight of the subject.

The pigment is a component added to implement various colors and enhance visibility in the packaging material, and may include an extender pigment, a color pigment, or a mixture thereof.

Extender pigments include calcium carbonate, kaolin, aluminum silicate, titanium dioxide, satin white, dolomite, mica, metal flakes, bentonite, rutile, magnesium hydroxide, gypsum, talc, calcium silicate, or Mixtures of these can be used.

In order to achieve the effect of coloring and improving the durability of the packaging material at the same time, the colored pigments include metal oxides such as red iron oxide, iron sulfate, black iron oxide, and copper oxide, chromates such as chromium orange, chromium green, and chromium yellow, and chromium oxide green. Inorganic pigments including lactates, carbonates, hydroxides, chromates, or mixtures thereof may be used, or organic pigments such as cyanine green, cyanine blue containing phthalocyanine, and quinacridone may be used.

Preferably, the pigment may be included in a ratio of 1 to 20 parts by weight relative to 100 parts by weight of the main body, and when the content of the pigment is less than 1 part by weight, the effect of imparting coloring and improving durability of the packaging material is insignificant, and when it exceeds 20 parts by weight, the pigment The effect of excessive use of is insignificant.

More preferably, the pigment may include a colored pigment and an infrared reflecting pigment capable of reflecting near-infrared rays, and 1 to 20 parts by weight of a mixture comprising a colored pigment and an infrared reflecting pigment in a weight ratio of 1:1, respectively. Can be mixed in proportions.

On the other hand, the heat exchange material serves to provide heat shielding performance by heat exchange by converting heat energy formed by exposure to sunlight into kinetic energy, thereby reducing the occurrence of a heat island phenomenon in urban areas.

To this end, the heat exchange material has a structure including spherical vibrating particles having a hollow cavity structure and a metal oxide layer formed on the surface of the spherical vibrating particles.

Specifically, when the spherical vibrating particles receive infrared rays from sunlight and are heated, they have a hollow cavity structure inside and expand, but since the metal oxide particles on the outer surface do not expand, expansion stress occurs. It is deformed due to the generated expansion stress, and vibration is generated to open the thermal stress. Thereafter, the deformed spherical vibrating particles generate a reaction force, and the reaction force of the compressed air to expand is also added to instantly return to the original shape, where heat energy is converted into kinetic energy.

In particular, the heat exchange material can form a metal oxide layer by coating a metal oxide coating agent prepared by combining metal oxide powder at a specific ratio on the surface of the spherical vibrating particles, and the spherical vibrating particles have an average diameter of 0.1 to 50 µm. It is possible to use those having, and those prepared by dispersion polymerization of an aromatic vinyl compound or an unsaturated carboxylic acid ester compound as a monomer may be used.

The aromatic vinyl compound is styrene, a-methyl styrene, a-chloro styrene, p-tert-butyl styrene, p-methyl styrene, p-chloro styrene, o-chloro styrene, 2,5-dichloro styrene, 3,4- Representative examples include dichloro styrene, dimethyl styrene, and divinylbenzene, or a mixture thereof, and the unsaturated carboxylic acid ester compound is methyl acrylate, methyl meth acrylate, ethyl acrylate, ethyl meth acrylate, propyl acrylate, Representative examples include propyl methacrylate, butyl acrylate, butyl methacrylate, or a mixture thereof.

In addition, the metal oxide particles contained in the metal oxide layer absorb infrared rays to easily accumulate thermal energy, and convert the accumulated thermal energy into kinetic energy to actively induce a heat exchange action.

As the metal oxide particles, a metal oxide powder including tungsten oxide (W), cesium oxide (Cs), tin oxide (Sn), antimony oxide (Sb) or a mixture thereof capable of absorbing infrared rays may be used. Particles can absorb infrared rays by securing as much as possible a positive hole that can maximize the activity of free electrons, and since the bonding structure is stable, it does not cause changes in physical properties to the coating composition. In particular, the metal oxide particles absorb a large amount of infrared rays to accumulate heat energy in the spherical polymer material included in the heat exchange material in a short time, and the accumulated heat energy is converted into kinetic energy that causes the vibration of the spherical polymer material. And a heat shielding effect.

As an example, the spherical metal oxide particles may be mixed metal oxide powder prepared by mixing 100 parts by weight of tungsten oxide (WO ₃ ) powder and 30 to 50 parts by weight of cesium oxide (Cs ₂ O) powder, and mixed metal oxide powder A heat exchange material can be prepared by forming a metal oxide layer on the surface of the polymer material by using a coating agent in which 10 to 30 parts by weight is mixed with 100 parts by weight of an organic solvent such as alcohol, ketone, acetic acid, or the like.

In particular, the heat exchange material as described above may be included in a ratio of 5 to 50 parts by weight, and if the content of the heat exchange material is less than 5 parts by weight, the heat exchange effect is insignificant, and if it exceeds 50 parts by weight, the heat exchange efficiency is rather lowered, and packaging The problem of deteriorating the physical properties of the layer coating may occur.

On the other hand, the packaging composition according to the present invention may be configured to further include water, an organic solvent or a mixture thereof in order to improve workability and increase the content of the filler, and the organic solvent may be acetone, toluene, xylene, naphtha. , Methanol, ethanol, isopropyl alcohol, butanol, methyl ethyl ketone, methyl isobutyl ketone, or mixtures thereof.

In addition, the packaging composition according to the present invention may be configured to additionally include an additive for the purpose of improving the physical properties of the packaging layer, and the additives include curing aids, crosslinking agents, ultraviolet stabilizers, modifiers, silane coupling agents, antifoaming agents, leveling agents. Representative examples include agents, wetting agents, flame retardants, matting agents, antioxidants, viscosity modifiers, or mixtures thereof. The additive may be mixed in a ratio of 2 to 20 parts by weight based on 100 parts by weight of the main body within a range that does not impair the physical properties of the packaging material depending on the purpose of use.

Specifically, the curing accelerator may be added for the purpose of inducing low-temperature curing and rapid curing by crosslinking MMA resin, PVA resin, and EVA resin, and serves to prevent ductility of the coating film from deteriorating and increase strength.

The curing accelerator is boric acid, trimethylolpropane trimethacrylic acid, dimethyl aniline, diethyl aniline, diethanol aniline, dimethyl-p-toluidine, diisopropoxy-p-toluidine and N,N-bis-(2-hydroxyl). Representative examples include amine compounds such as ethyl)-p-toluidine or mixtures thereof.

Preferably, the curing accelerator may be boric acid, and boric acid may be mixed in a ratio of 1 to 5 parts by weight based on 100 parts by weight of the main body.

The UV stabilizer serves to provide a surface protection effect to block discoloration of the packaging material and changes in physical properties by improving the stability of the packaging material against UV rays, and 2-(2'-hydroxy-3, 5' -Di(1,1-dimethylbenzyl-phenyl)-benzotriazole, 2-(2'-hydroxy-3', 5'-di-ter-butylphenyl)-benzotriazole, 2-(2'- Hydroxy-3'-terbutyl-5'-methylphenyl)-5-chloro-benzotriazole, 2-(2-hydroxy-5-ter-octylphenyl)-benzotriazole, 2-(5-methyl- 2-hydroxy-phenyl)-benzotriazole, 2,6-di-t-butyl-4-methylphenol, tetrakis[methylene-3-(3,5-di-t-butyl-4-hydroxyphenyl) )Propionate]methane, octadecyl-3,5-di-t-butyl-4-hydroxyhydrocinnamate, 2,2-methylenebis(4-methyl-6-t-butylphenol), tris(2 ,4-di-t-butylphenyl)-phosphite, bis(2,4-di-t-butyl), pentaerythritol-di-phosphite alkylester phosphite, dilauryl thio-di-propionate, di Representative examples are -stearyl thio-di-propionate and dimyristyl thio-di-propionate or mixtures thereof.

The modifier is capable of modifying the physical properties of the packaging material, and can be used silica, talc, bentone, silane, or a mixture thereof.In particular, silane serves to improve the water resistance of silicate by reacting with silicate and silane coupling agent. , This can greatly improve the durability of the packaging layer.

Since the silane coupling agent has a reactor capable of bonding with an organic functional group in a molecule and a reactor capable of bonding with an inorganic material, it improves adhesion between different materials and the accompanying mechanical strength, water resistance, weather resistance, and heat resistance. .

Silane coupling agents are vinylmethoxysilane, γ-aminopropyltrimethoxysilane, γ-glycidylpropyltrimethoxysilane, and γ-melcaptopropyltrimethoxysilane. Silane (γ-mercaptopropyltrimethoxysilane), γ-methacryloxypropyltrimethoxysilane, γ-aminopropylmethyl-diethoxysilane, γ-aminopropylmethyl-triethoxysilane Representative examples include (γ-aminopropylmethyltriethoxysilane) and 3-glycidoxypropyltrimethoxysilane.

Antifoaming agents are added to the composition to remove air bubbles, and silicone-based such as polydimethylsiloxane and methylsiloxane, non-silicone-based such as polyalkylvinylether, mineral oil, or their Mixtures can be used.

The leveling agent is added to improve fluidity by lowering the surface tension of the composition, and polyacrylate, polyethylene oxideacetate, or a mixture thereof may be used.

Wetting agents are added to increase the diffusion power by reducing the interfacial tension of the composition with the adherend surface such as concrete, etc., citric acid, polyglycerol fatty acid ester, sorbitan fatty acid ester, polyethylene glycol, ethoxylate, or mixtures thereof You can use

The flame retardant serves to improve the durability of the packaging material according to temperature changes, and may be used by introducing various known materials commonly used in the art.

Flame retardants include triphenyl phosphate, trixylenyl phosphate, tricresyl phosphate, triisophenyl phosphate, tris-chloroethyl phosphate, tris-chloropropyl phosphate, resorcinol di-phosphate, aromatic polyphosphate, ammonium polyphosphate, Representative examples are red phosphorus, aluminum hydroxide, or mixtures thereof.

The matting agent is added for the purpose of lowering the gloss of the packaging material, and various known materials commonly used in the art may be introduced.

Representative examples of the matting agent are airgel silica, hydrogel silica, PP wax, PE wax, PTFE wax, urea formaldehyde resin, benzoguamine formaldehyde resin, or a mixture thereof.

Antioxidants play a role in preventing discoloration of the packaging material and preventing degradation of physical properties due to oxidation, and various known materials commonly used in the art may be introduced.

The antioxidant may be a phosphorus antioxidant, a phenolic antioxidant, or a mixture thereof.

Representative examples of phosphorus antioxidants include tri-methylphosphate, tri-phenylphosphate, tris(2,4-di-tert-butylphenyl)phosphate or mixtures thereof, and the phenolic antioxidant is triethyleneglycol-bis- 3- (3-tert-butyl-4-hydroxy-5-methylphenyl) propionate, 1, 6-hexane-diol-3 (3, 5-di-tert-butyl-4-hydroxyphenyl) pro Cypionate, pentaerythrityl-tetrakis (3-(3, 5-di-tert-butyl-4-hydroxyphenyl) propionate, 2-hydroxybenzophenone, 2-hydroxyphenylbenzothiazole, hin Representative examples include durd amines, organic nickel compounds, salicylate, cinnamate derivatives, resorcinol monobenzoate, oxanilide, p-hydroxybenzoate, or mixtures thereof.

Viscosity modifiers are added for the purpose of controlling the viscosity of the composition, and include phenyl glycidyl ether, cresyl glycidyl ether, butyl glycidyl ether, 1 ,4-butadiene diol diglycidyl ether, salicylic acid (C ₇ H ₆ O ₃ ), benzyl alcohol (C ₇ H ₈ O), or a mixture thereof may be used.

As described above, the packaging composition according to the present invention includes a heat exchange material capable of converting thermal energy into kinetic energy, imparts heat exchange performance to the portion where the packaging composition is applied, and prevents the surface temperature from rising, thereby preventing an increase in the surface temperature. The phenomenon can be alleviated and energy consumption can be reduced.

In addition, the packaging composition according to the present invention additionally introduces a PVA resin and an EVA resin to improve the physical properties of the MMA resin, and even when the content of the steel-making slag filler, which is a solid component, is high, the filler is not easily separated from the pavement layer. Therefore, it is possible to stably form a non-slip pavement layer on the road for a long time.

In addition, the anti-slip packaging composition according to the present invention can form an anti-slip packaging layer with better long-term durability by introducing a coated filler to improve bonding strength with the subject, and can effectively absorb infrared rays to realize improved heat exchange performance. have.

On the other hand, the packaging composition according to the present invention is preferably installed to a thickness of 1 to 50 mm to form a packaging layer, and when installed to a thickness of less than 1 mm, the filler is excessively exposed to the outer surface of the packaging layer, so that the filler is easily There may be a problem that it is easily separated by impact, and if it is installed with a thickness exceeding 50 mm, the strength and heat shielding performance of the pavement layer may be deteriorated.

In particular, the packaging composition according to the present invention can form a coating film having a thickness of 10 mm or more due to the high content of the filler, unlike conventional non-slip packaging materials containing MMA resin, and the adhesive strength is improved so that the filler is easily used even when used for a long time. It can exhibit a property that does not separate, and since it contains silicate that forms a strong bond with concrete, it can be easily used for road surface, building surface, concrete road surface laying.

Preferably, the packaging material composition according to the present invention can be easily used as an anti-slip packaging material.

Hereinafter, the present invention will be described in more detail by way of examples.

The examples presented are only specific examples of the present invention, and are not intended to limit the scope of the present invention.

<Example 1>

A packaging composition according to Example 1 was prepared by mixing each component in a weight ratio as shown in Table 1 below, and benzoyl peroxide was used as a curing agent.

The filler was used as a mixed filler in which silica sand particles pulverized to a size of 0.5 to 1.5 mm and silica sand particles crushed to a size of 3 to 5 mm were mixed in a weight ratio of 2:8.

<Example 2>

Each component was mixed in a weight ratio as shown in Table 2 below to prepare a packaging material composition according to Example 2.

<Example 3>

As shown in Table 2, a packaging composition was prepared in the same composition as Example 1-2, except that 1 part by weight of boric acid was further mixed as an additive.

<Example 4>

As shown in Table 2, a packaging composition was prepared in the same composition as in Example 1-2, except that 2 parts by weight of an additive containing boric acid and vinylmethoxysilane in a weight ratio of 1:1, respectively, was further mixed.

<Example 5>

As shown in Table 2 above, a packaging composition in the same composition as in Example 1-2, except that 3 parts by weight of an additive including boric acid, vinylmethoxysilane and silicate in a weight ratio of 1:2:1, respectively, was further mixed. Was prepared.

As the silicate, a silicate mixture obtained by mixing lithium silicate and sodium silicate in a weight ratio of 2:1 was used.

<Example 6>

A mixture of 30 parts by weight of silica sand coated with a filler, 30 parts by weight of silica sand having an average particle size of 0.5 to 1.5 mm, and 70 parts by weight of silica sand having an average particle size of 3 to 5 mm are mixed with 130 parts by weight of 100 parts by weight of the main body. Except that, a packaging composition was prepared in the same composition as in Example 2-2.

Coated silica sand 1,000 g of silica sand was immersed in 2 L of 1M H ₂ SO ₄ solution, stirred for 3 hours to react, immersed in a coating solution containing copper sulfate, heated to 80°C, and reacted for 2 hours to make copper sulfate surface The coated silica sand coated on was prepared, and the coated silica sand was prepared using silica sand having an average particle size of 3 to 5 mm.

The coating solution containing copper sulfate is copper sulfate (CuSO ₄ ) and sodium sulfide mixed with a solvent in a molar ratio of 1:1, and reacted for 2 hours while heated to a temperature of 70° C. to prepare copper sulfate, and the prepared copper sulfate Then, 300 g of the obtained copper sulfate was mixed with 1 L of isopropyl alcohol to use what was prepared.

<Example 7>

A mixture of 30 parts by weight of coated silica sand as a filler, 40 parts by weight of silica sand having an average particle size of 0.5 to 1.5 mm, and 80 parts by weight of silica sand having an average particle size of 3 to 5 mm are mixed with 150 parts by weight of the main body 100 parts by weight. Except that, a packaging composition was prepared in the same composition as in Example 2-4. The coated silica sand was used in the same manner as in Example 6.

<Experimental Example>

(1) Evaluation of physical properties of the packaging material composition

The adhesive properties of the packaging material composition prepared by the method according to Examples and Comparative Examples were evaluated, and the results are shown in Table 3. The adhesive property evaluation was performed according to the adhesive strength measurement method (KS F 4936). Specifically, the anti-slip packaging composition prepared by the method according to the Examples and Comparative Examples was applied to the concrete surface and then cured to form a non-slip pavement layer having an average thickness of 5 mm to prepare a specimen. The pavement layer formed on the prepared specimen is grooved with a 10 cm diameter core extractor, and then the adhesive plate is attached to the top of the pavement layer, and the pavement layer is separated by a hydraulic tensile tester to measure the strength at which the pavement layer is broken. Unit: N/mm ² ) was measured.

In addition, the slip resistance was measured according to KS F 2375 (Slip Resistance Test Method of Road Surface) using a wheel tracking specimen, and the wear resistance of the pavement layer (H-18, 1 Kg, according to ASTM D 4060 (Abrasion Resistance Test Method)) 1,000 cycles) were evaluated, and impact resistance, water resistance, and acceleration durability were analyzed, respectively.

As shown in Table 3, as a result of checking the adhesive strength of the pavement layer constructed with the packaging material composition prepared by the method according to Examples and Comparative Examples, adhesion of the pavement layer coated with the packaging material composition prepared by the method according to Example 7 It was confirmed that the characteristics were the best.

In addition, as in Example 5, it was confirmed that the adhesive properties were greatly improved by the use of additives, and in Example 7, 150 parts by weight of the filler contained a high content of the filler, but the decrease in the adhesive strength was large. It was confirmed not.

In particular, in the case of Examples 2-2 to 2-4, it was confirmed that the adhesive property did not significantly decrease even when the content of the filler was large, and the content of the solid component filler was greatly increased due to the introduction of MEA and PVA. It can be confirmed that it is possible to form a coating film having a sufficiently thick thickness of 5 mm or more with one application, and it was determined that the formed packaging layer has excellent properties.

In addition, it was confirmed that the packaging material composition according to the embodiment has improved impact resistance, so that even when a load is continuously applied, cracks do not occur in the packaging layer, and the phenomenon in which the filler is detached is reduced, thereby having excellent durability.

(2) Evaluation of filler separation prevention performance

The performance of preventing separation of the filler of the packaging layer formed by using the packaging material composition prepared by the method according to Examples and Comparative Examples was evaluated, and the results are shown in FIG. 1. In order to evaluate the filler separation prevention performance, high-pressure air of 10 MPa strength was sprayed on the surface of the specimen on which the pavement layer was formed for 60 minutes, and the weight of the specimen before spraying and the weight of the specimen after spraying were measured to measure the weight change due to the separated filler. And, through this, the loss ratio (%) of the filler was calculated and shown.

As a result of evaluating the performance of the packaging layer formed using the packaging composition prepared by the method according to Examples and Comparative Examples, as shown in Fig. 1, the loss rate of the specimen coated with the packaging composition prepared by the method according to Example 7 It was confirmed that this was the lowest, and it realized excellent anti-slip performance.

In addition, in the case of Examples 2-2 to 2-4, it was confirmed that the loss rate (%) did not increase significantly even when the content of the filler was large, and the loss rate could be further reduced by mixing coated silica sand, and PVA It was confirmed that the loss rate was affected by mixing of resin and EVA resin, and it was also affected by boric acid, silane mixture and silicate.

Through the above results, the packaging composition according to the present invention has improved physical properties, so that the filler is not easily separated from the pavement layer, thereby forming a non-slip paving layer that maintains the non-slip performance for a long period of time, and is applied to the building surface. Even in the case, it was confirmed that a packaging layer having excellent durability can be formed.

(3) Heat insulation performance evaluation

The heat shielding performance of the packaging material composition prepared by the method according to the example was evaluated, and the results are shown in FIGS. 2 and 4.

Heat shielding performance evaluation was carried out by applying the prepared pavement composition to the asphalt surface with a roller brush and measuring the surface temperature (unit: ℃) of the road by time. In this case, the asphalt surface without the pavement layer Using the temperature as a control, the heat shielding performance of the packaging material composition was evaluated.

As shown in Figs. 2 and 4, the temperature of the surface to which the paving material composition according to the embodiment is applied is significantly lower than the temperature of the surface of the asphalt (control) without the paving material composition. It was confirmed that it was excellent.

In addition, when the content of the filler is increased, it can be confirmed that the exposed surface area of the heat exchange material is lowered and the heat shielding performance is deteriorated.When the coated silica sand is introduced, infrared absorption can be promoted, even when an excessive amount of filler is contained. It was confirmed that it will improve.

In particular, it was confirmed that the pavement composition exhibits excellent heat shielding performance on the road surface during a time when sunlight is strong, and thus, it was determined that it could prevent road deformation by preventing an increase in the temperature of the road surface.

Detailed description of the preferred embodiments of the present invention disclosed as described above has been provided to enable those skilled in the art to implement and implement the present invention. Although described above with reference to preferred embodiments of the present invention, those skilled in the art will understand that various modifications and changes can be made to the present invention without departing from the scope of the present invention. For example, a person skilled in the art may use the components described in the above-described embodiments in a manner that combines them with each other. Accordingly, the invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

The present invention may be embodied in other specific forms without departing from the spirit and essential features of the present invention. Therefore, the detailed description above should not be construed as restrictive in all respects and should be considered as illustrative. The scope of the present invention should be determined by reasonable interpretation of the appended claims, and all changes within the equivalent scope of the present invention are included in the scope of the present invention. The invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein. In addition, an embodiment may be configured by combining claims that do not have an explicit citation relationship in the claims, or may be included as a new claim by amendment after filing.

Claims (4)

100 parts by weight of the subject;
50 to 150 parts by weight of a filler including silica sand;
0.5 to 5 parts by weight of a curing agent;
1 to 10 parts by weight of pigment; And
Including; 5 to 50 parts by weight of heat exchange material,
The subject is methyl methacrylate resin (MMA) 40 to 60 parts by weight, polyvinyl alcohol (PVA) resin 15 to 25 parts by weight, ethylene vinyl acetate (EVA) resin 5 to A packaging composition comprising 15 parts by weight and 15 to 25 parts by weight of monoethanolamine (MEA). The method of claim 1,
It characterized in that it further comprises at least one additive selected from the group consisting of a curing accelerator, an ultraviolet stabilizer, a modifier, a silane coupling agent, an antifoaming agent, a leveling agent, a wetting agent, a flame retardant, a matting agent, an antioxidant, a surfactant, and a viscosity modifier. The packaging material composition. The method of claim 1,
The methyl methacrylate resin is a mixture of 10 to 30 parts by weight of a low viscosity methyl methacrylate resin having a viscosity of 10 to 2,000 cps and 70 to 90 parts by weight of a high viscosity methyl methacrylate resin having a viscosity of 3,000 to 15,000 cps. Packaging material composition, characterized in that the methacrylate resin. The method of claim 1,
The filler includes coated silica sand coated with copper sulfide,
The coated silica sand,
Acid treatment of the silica sand by immersing the silica sand in an acidic aqueous solution having a pH of 1 to 3 and then reacting for 1 to 12 hours; And
A packaging material composition prepared by a method comprising the step of immersing the acid-treated silica sand in a coating solution containing copper sulfate, heating at a temperature of 50 to 90°C, and reacting for 1 to 6 hours to prepare coated silica sand .

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